dome size...

[shee23]

im building a hjr 4mil dune ported motor and im running cpi inframes, vf3's, 35pwk's, noss head, and im wanting to run half pump half race gas so im not sure wat dome size to run. im sittin at 5,000 ft so i was thinkin 19 or 18cc domes. wat do u guys think?

[Wildcardracing]

Depending on the exhaust porting, 19's should put you right around 150psi give or take and should be safe for 91. So 18's should work for 100 mixed.